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Functional bioinformatics of microarray data: from expression to regulation

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5 Author(s)
Moreau, Y. ; Dept. of Electr. Eng., Katholieke Univ., Leuven, Belgium ; De Smet, F. ; Thijs, G. ; Marchal, K.
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Using microarrays is a powerful technique to monitor the expression of thousands of genes in a single experiment. From series of such experiments, it is possible to identify the mechanisms that govern the activation of genes in an organism. Short deoxyribonucleic acid patterns (called binding sites) near the genes serve as switches that control gene expression. As a result similar patterns of expression can correspond to similar binding site patterns. Here we integrate clustering of coexpressed genes with the discovery of binding motifs. We overview several important clustering techniques and present a clustering algorithm (called adaptive quality-based clustering), which we have developed to address several shortcomings of existing methods. We overview the different techniques for motif finding, in particular the technique of Gibbs sampling, and we present several extensions of this technique in our Motif Sampler. Finally, we present an integrated web tool called INCLUSive (available online at http://www.esat.kuleuven.ac.be/∼dna/BioI/Software.html) that allows the easy analysis of microarray data for motif finding.

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Proceedings of the IEEE  (Volume:90 ,  Issue: 11 )